Finding the Third Proportional to 139,804,928 and 209,707,412

Step by Step Solution

1. Step 1: Write the proportion equation
   139,804,928 : 209,707,412 = 209,707,412 : x
2. Step 2: Convert to fraction form
   139,804,928/209,707,412 = 209,707,412/x
3. Step 3: Cross multiply
   139,804,928x = 209,707,412 × 209,707,412
4. Step 4: Simplify right side
   139,804,928x = 43,977,198,647,737,744
5. Step 5: Solve for x
   x = 43,977,198,647,737,744/139,804,928
6. Step 6: Final answer
   x = 314,561,148.00